1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dew/src/main/java/org/apidesign/bck2brwsr/launcher/Console.java Wed Jan 23 13:56:54 2013 +0100
1.3 @@ -0,0 +1,253 @@
1.4 +/**
1.5 + * Back 2 Browser Bytecode Translator
1.6 + * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
1.7 + *
1.8 + * This program is free software: you can redistribute it and/or modify
1.9 + * it under the terms of the GNU General Public License as published by
1.10 + * the Free Software Foundation, version 2 of the License.
1.11 + *
1.12 + * This program is distributed in the hope that it will be useful,
1.13 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.14 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.15 + * GNU General Public License for more details.
1.16 + *
1.17 + * You should have received a copy of the GNU General Public License
1.18 + * along with this program. Look for COPYING file in the top folder.
1.19 + * If not, see http://opensource.org/licenses/GPL-2.0.
1.20 + */
1.21 +package org.apidesign.bck2brwsr.launcher;
1.22 +
1.23 +import java.io.IOException;
1.24 +import java.io.InputStream;
1.25 +import java.lang.reflect.InvocationTargetException;
1.26 +import java.lang.reflect.Method;
1.27 +import java.lang.reflect.Modifier;
1.28 +import java.net.URL;
1.29 +import java.util.Enumeration;
1.30 +import org.apidesign.bck2brwsr.core.JavaScriptBody;
1.31 +
1.32 +/**
1.33 + *
1.34 + * @author Jaroslav Tulach <jtulach@netbeans.org>
1.35 + */
1.36 +public class Console {
1.37 + static {
1.38 + turnAssetionStatusOn();
1.39 + }
1.40 +
1.41 + @JavaScriptBody(args = {"id", "attr"}, body =
1.42 + "return window.document.getElementById(id)[attr].toString();")
1.43 + private static native Object getAttr(String id, String attr);
1.44 +
1.45 + @JavaScriptBody(args = {"id", "attr", "value"}, body =
1.46 + "window.document.getElementById(id)[attr] = value;")
1.47 + private static native void setAttr(String id, String attr, Object value);
1.48 +
1.49 + @JavaScriptBody(args = {}, body = "return; window.close();")
1.50 + private static native void closeWindow();
1.51 +
1.52 + private static void log(String newText) {
1.53 + String id = "bck2brwsr.result";
1.54 + String attr = "value";
1.55 + setAttr(id, attr, getAttr(id, attr) + "\n" + newText);
1.56 + setAttr(id, "scrollTop", getAttr(id, "scrollHeight"));
1.57 + }
1.58 +
1.59 + public static void execute() throws Exception {
1.60 + String clazz = (String) getAttr("clazz", "value");
1.61 + String method = (String) getAttr("method", "value");
1.62 + Object res = invokeMethod(clazz, method);
1.63 + setAttr("bck2brwsr.result", "value", res);
1.64 + }
1.65 +
1.66 + @JavaScriptBody(args = { "url", "callback", "arr" }, body = ""
1.67 + + "var request = new XMLHttpRequest();\n"
1.68 + + "request.open('GET', url, true);\n"
1.69 + + "request.onreadystatechange = function() {\n"
1.70 + + " if (this.readyState!==4) return;\n"
1.71 + + " arr[0] = this.responseText;\n"
1.72 + + " callback.run__V();\n"
1.73 + + "};"
1.74 + + "request.send();"
1.75 + )
1.76 + private static native void loadText(String url, Runnable callback, String[] arr) throws IOException;
1.77 +
1.78 + public static void harness(String url) throws IOException {
1.79 + log("Connecting to " + url);
1.80 + Request r = new Request(url);
1.81 + }
1.82 +
1.83 + private static class Request implements Runnable {
1.84 + private final String[] arr = { null };
1.85 + private final String url;
1.86 +
1.87 + private Request(String url) throws IOException {
1.88 + this.url = url;
1.89 + loadText(url, this, arr);
1.90 + }
1.91 +
1.92 + @Override
1.93 + public void run() {
1.94 + try {
1.95 + String data = arr[0];
1.96 + log("\nGot \"" + data + "\"");
1.97 +
1.98 + if (data == null) {
1.99 + log("Some error exiting");
1.100 + closeWindow();
1.101 + return;
1.102 + }
1.103 +
1.104 + if (data.isEmpty()) {
1.105 + log("No data, exiting");
1.106 + closeWindow();
1.107 + return;
1.108 + }
1.109 +
1.110 + Case c = Case.parseData(data);
1.111 + if (c.getHtmlFragment() != null) {
1.112 + setAttr("bck2brwsr.fragment", "innerHTML", c.getHtmlFragment());
1.113 + }
1.114 + log("Invoking " + c.getClassName() + '.' + c.getMethodName() + " as request: " + c.getRequestId());
1.115 +
1.116 + Object result = invokeMethod(c.getClassName(), c.getMethodName());
1.117 +
1.118 + setAttr("bck2brwsr.fragment", "innerHTML", "");
1.119 + log("Result: " + result);
1.120 +
1.121 + result = encodeURL("" + result);
1.122 +
1.123 + log("Sending back: " + url + "?request=" + c.getRequestId() + "&result=" + result);
1.124 + String u = url + "?request=" + c.getRequestId() + "&result=" + result;
1.125 +
1.126 + loadText(u, this, arr);
1.127 +
1.128 + } catch (Exception ex) {
1.129 + log(ex.getMessage());
1.130 + }
1.131 + }
1.132 + }
1.133 +
1.134 + private static String encodeURL(String r) {
1.135 + StringBuilder sb = new StringBuilder();
1.136 + for (int i = 0; i < r.length(); i++) {
1.137 + int ch = r.charAt(i);
1.138 + if (ch < 32 || ch == '%' || ch == '+') {
1.139 + sb.append("%").append(("0" + Integer.toHexString(ch)).substring(0, 2));
1.140 + } else {
1.141 + if (ch == 32) {
1.142 + sb.append("+");
1.143 + } else {
1.144 + sb.append((char)ch);
1.145 + }
1.146 + }
1.147 + }
1.148 + return sb.toString();
1.149 + }
1.150 +
1.151 + static String invoke(String clazz, String method) throws ClassNotFoundException, InvocationTargetException, IllegalAccessException, InstantiationException {
1.152 + final Object r = invokeMethod(clazz, method);
1.153 + return r == null ? "null" : r.toString().toString();
1.154 + }
1.155 +
1.156 + /** Helper method that inspects the classpath and loads given resource
1.157 + * (usually a class file). Used while running tests in Rhino.
1.158 + *
1.159 + * @param name resource name to find
1.160 + * @return the array of bytes in the given resource
1.161 + * @throws IOException I/O in case something goes wrong
1.162 + */
1.163 + public static byte[] read(String name) throws IOException {
1.164 + URL u = null;
1.165 + Enumeration<URL> en = Console.class.getClassLoader().getResources(name);
1.166 + while (en.hasMoreElements()) {
1.167 + u = en.nextElement();
1.168 + }
1.169 + if (u == null) {
1.170 + throw new IOException("Can't find " + name);
1.171 + }
1.172 + try (InputStream is = u.openStream()) {
1.173 + byte[] arr;
1.174 + arr = new byte[is.available()];
1.175 + int offset = 0;
1.176 + while (offset < arr.length) {
1.177 + int len = is.read(arr, offset, arr.length - offset);
1.178 + if (len == -1) {
1.179 + throw new IOException("Can't read " + name);
1.180 + }
1.181 + offset += len;
1.182 + }
1.183 + return arr;
1.184 + }
1.185 + }
1.186 +
1.187 + private static Object invokeMethod(String clazz, String method)
1.188 + throws ClassNotFoundException, InvocationTargetException,
1.189 + SecurityException, IllegalAccessException, IllegalArgumentException,
1.190 + InstantiationException {
1.191 + Method found = null;
1.192 + Class<?> c = Class.forName(clazz);
1.193 + for (Method m : c.getMethods()) {
1.194 + if (m.getName().equals(method)) {
1.195 + found = m;
1.196 + }
1.197 + }
1.198 + Object res;
1.199 + if (found != null) {
1.200 + try {
1.201 + if ((found.getModifiers() & Modifier.STATIC) != 0) {
1.202 + res = found.invoke(null);
1.203 + } else {
1.204 + res = found.invoke(c.newInstance());
1.205 + }
1.206 + } catch (Throwable ex) {
1.207 + res = ex.getClass().getName() + ":" + ex.getMessage();
1.208 + }
1.209 + } else {
1.210 + res = "Can't find method " + method + " in " + clazz;
1.211 + }
1.212 + return res;
1.213 + }
1.214 +
1.215 + @JavaScriptBody(args = {}, body = "vm.desiredAssertionStatus = true;")
1.216 + private static void turnAssetionStatusOn() {
1.217 + }
1.218 +
1.219 + private static final class Case {
1.220 + private final Object data;
1.221 +
1.222 + private Case(Object data) {
1.223 + this.data = data;
1.224 + }
1.225 +
1.226 + public static Case parseData(String s) {
1.227 + return new Case(toJSON(s));
1.228 + }
1.229 +
1.230 + public String getMethodName() {
1.231 + return value("methodName", data);
1.232 + }
1.233 +
1.234 + public String getClassName() {
1.235 + return value("className", data);
1.236 + }
1.237 +
1.238 + public String getRequestId() {
1.239 + return value("request", data);
1.240 + }
1.241 +
1.242 + public String getHtmlFragment() {
1.243 + return value("html", data);
1.244 + }
1.245 +
1.246 + @JavaScriptBody(args = "s", body = "return eval('(' + s + ')');")
1.247 + private static native Object toJSON(String s);
1.248 +
1.249 + @JavaScriptBody(args = {"p", "d"}, body =
1.250 + "var v = d[p];\n"
1.251 + + "if (typeof v === 'undefined') return null;\n"
1.252 + + "return v.toString();"
1.253 + )
1.254 + private static native String value(String p, Object d);
1.255 + }
1.256 +}